For use in vehicles previously serviceable by Dexron-III/Mercon brands. FormulaShell Automatic Transmission Fluid is a specially formulated automatic transmission fluid. Suitable for use in vehicles requiring Dexron-II, Dexron-III and Mercon fluids. FormulaShell Automatic Transmission Fluid provides the following benefits: excellent high and low temperature protection to -40 degrees F (40 degrees C); excellent anti-shudder protection; outstanding resistance to wear, oxidation, sludge and varnish deposits.